Centrifugal pump.



v*Enann aA'rI- D -KROGH ANDCARLA. Karien, or SAN FRANoIseo, 'l l-CALIFORNIA. l A a v' ci-:VNTHIFUGAL-PYUMP. f -'N9 81 j 439 l i ll'iSpe(initiation gifpettersatent;rj. Patented l To all whom/it'cori/cent.; l

y KRQGH' and CARLA. Kizoen, citizens of the fV United {States} cisco,.in the countyof San FranciscofState of California have and 4residents off Franl'nvented a new andfuseful 'f' e lmrovement in Centrifugal Pumpsand we ereby declare that Whichfitmostnearly appertains to make, use;

y and practice the same.'

" the same, as

but more particularly tosthat` "classcalled centrifugal and it consistsyespecially in ythe connecting ump-casing and 'to provide same ywith'suita' the casing and the impeller and at the same time providesuitable means-for lubricating will be=. n'1ore l fully describedhereinafter; Y' f Reference is made tothe herewith-anneked w drawings,"consisting j of five "'igures; f which central vertical 'per horizontalform apart of thisspecification,` in

an ordinary centrifugal .pump. Fig. 2 isa Vsection taken from Vdottedline 1 to 1of Fig-s invention. Fig. f 3 fis an from dotted line 2 to ,OfFig. 3 looking in .the direction ofthe arrows; and Fig.; 51is a viewYtaken from dotted line 3 to3 of Fig-4, showinglparticularlyv the Likeletters ofreference made .use of in the several figures indicatelike'parts wherever "emlployed, .s 1

represents the casingof an ordinary cene.

vtrlugal axis; B,`a vertlcal base'provided :with anupand C 1s a `elbowsuction or Iinlet pipe mou-nted urion asuitable line, Fig'. 2. Y Thecasing A is mounted bey' tween the endsy ofgthe elbow-pipe C and`r theupper horizontal cylindrical bearing portion v Y Application ledSeptember 1,1908. Seria1'No. .17' 1,

thefollowin'g is a full, clear, .and exact description of saidinvention, such as will enable others skilled in the art toy dricaliiangesk b, Ournvention relates to pumps ger` 1"eral,.

lepackingas the object otV a water-tightjoint between which- Figure 1represents a vertical elevation of 1 with va portion broken V 'view showlng particularly. ourimprovedjannular col'4 packing and lubricatingVmeans Fig. iisA a segmentalvlew taken `means rvby whicl 1` the annularcollars areadjustedin position..

puinp, projecting outwardly at its cylindrical bearing'V portion base,as shown in dotted vmeansr of angular brackets D, bolted to the annularrejections a, formed around the ends'- oft v-ltsfcentral portion isprovided withcylin- `iecting franges b of the 1nner. sides lor'- the anadjustab'ly secured in position byfmans 0f.- bolts 'H5 holes e, boredFig.- 5, The bolts H fof the packing-rings or annular collars d,whlh'rlligs upon 'their circumferences to recelve sald 1n- The walls ofthe holese are provided at the in- `bolts outwardly. Y The tensionofsaid springs endof thebolts. By this arrangement .the

annular collars d are `constantly forced against faces ,1 of which areprovided-' with circular between the annular cylindrical c bearingportion y'of' the verticall adjustably securedy within the Y through thesidewalls ofthe caslng or at lts axis for'that purpose, asis the innersides of the casing and the bearingf 'l s xo 5 lpackings m, Whichfmaybeof any suitable material, thus providinga water-tight joint collars dand the inner March 20,' JQ. y l

the base B and rigidly secured ,thereon 5 5' Y axis ofthecasingandj'adjusted against the e elbow-pipe C and the horizontal the'vupperv horizontal cylin- Q 2 drical bearingportion 'of the-verticalbase'B. j

65 projecting outwardly from v its sides-intoannulardepressionscutinwardl .s s around the axis of the casing withinwhich 1t .'revolves. Surrounding the cylindrical prothe impeller E justmentionedand Within the recesses'c, madefuponl f .casing atits axis',are` A packing-rings y'orl annular collars "d, formedV an" larly toprovide suitablebearing-faces outer end with nuts f 8o A s i VTheinner.Y f, en s of the boltsare bent to o verlapther edges f r or lcollarshave notches 71; formed v ner ends and hold thebolts rigidwhle the,`nuts are beingscrewedon their outer ends.y

59 ner ends of said holes with' annular inwardly#` f projectingshouldersfi, through which the vbolts pass centralil A, and near saidshouldersl 'l arelocated' washers aid shoulders are. inter- Z, wherebyWater-tight joints j Between the washers g and'c and coiled around thebolts are springs J, -which are intended to pull said' IOO is regulatedby the nut f, secured at the outer f; l

y said stationary an faces of the casin and the outer circumference ofthe cylin rical flanges b of the impelcler E, as particularlyillustrated in Figs. 3 an 5. Conveniently formed through the axis of thecasing are oil-conduits n, which are connected to the oil-conduit 0,bored through the annular collars d. The oil-conduits o are provided attheir upper end with a small pocket dp, in which the oil drops in fromthe oil-con uits n, and their lower ends are connected to an annulargroove g, invertedly formed within the inner bearing-face of the collarsd, which are adjusted to 'the cylindrical flanges b of the impeller,thus fully lubricating that portion. The oil-conduits n are providedwith oil-cup K to supply the oil to the grooves g and lubricating thebearingfaces between the collars d and the cylindrical flanges b of theimpeller E.

Believing we have produced a simple and effective means of packin andlubricating the connecting portion of tIie impeller to the casing of acentrifugal pump and having fully described same7 what we claim as new,and desire to secure by United States Letters Patent, is-

l. In the class of machinery described, a movable packing-ring securedto the stationary part and havin faces engaging seats on moving partsand provided with means Jfor preventing leakage of water between saidfaces and seats.

2. In the class of machinery described, the combination with astationary part and a moving part, of a movable packing-ring havingfaces engaging seats on said stationary and moving parts, spring-pressedmeans for securing said ring to said stationary part, and means forpreventing leakage of water between said faces and seats.

3. In the class of machinery described, the combination with astationary part having an opening, and a moving part in said stationarypart, of a packing-ring having faces en aging said stationary and movingparts, a bo t extending through said opening and engaged with said ring,means tending to force said bolt in one direction, and packing meanscontiguous to said bolt.

4. In the class of machinery described, the combination with astationary part having an opening, and a moving part in said stationarypart, of a packing-ring having faces e aging said stationary and movingparts, a

bo t extending through said openin and engaged with said ring, means forho ding said o t a alnst axial movement, a sprin on said bo t, tendingto ress the same an the acking-ring in one irection, a tension-ad- 6ojustincg1 means for said spring, and a acking on sai bolt, for theurposes specific 5. In the class ofp machinery described, a stationaryand a moving part a movable, packing-ring secured to the stationarypart, ,6 5 and having a, face engaging a seat on the, moving part andprovlded with means for 1 preventing leakage of water between said faceand seat, in combination with means for lubricating said face of thering.

6. In the class of machinery described, the combination with astationary and a movable part, of a packing-ring secured to thestationary part and having a water-tight face engaging a seat on themoving part, said packingrin also having an oil-conduit open upon saiface, and means through which said conduit is supplied with oil.

7. In a centrifugal pump, the combination with a casing havingshoulders, and an impeller rotating in said casing, of packingrin sengagin said impeller and rovided wit adjustab e means for connectingthem to said casing, com rising bolts extendin through said shoul ersand engaging sai rings, a spring on each bolt, and washers at the endsof said spring.

8. In a centrifugal pump, the combination with a casing havingshoulders, and an impeller .in said casing, of packin -rin s engaglngsaid impeller and provide wit adjustab e means for connecting them tosaid casing, said adjustable means comprising bolts extending throughsaid shoulders and connected to said rm s, springs on said bolts,washers at the en s of said springs, nuts at the outer ends of saidbolts, and a packing on each bolt, interposed betfen the inner washerand the contiguous shoulder.

In testimony whereof we have affixed our signatures, in the presence oftwo Witnesses, this 15th day of August, A. D. 1903.

YIn presence of J. CoRINsON, N. RAsoHEN.

IOO

